Answer:
y=1/5x+7
Step-by-step explanation:
Answer:
48
Step-by-step explanation:
80/100=0.8
0.8x60=48
Answer:
bleh
Step-by-step explanation:
5×1+3×1/10 +8×1/100+4×1/1000 write i dont konw i am just doing this for points
Let's assume length of the room as y
so the width of the room = y - 5
Area
y * (y - 5) = 750
Area is equal to length times width. The perimeter (the amount of rope) has to equal twice the length added to twice the width so we're left with:
A = l * w
200 = 2l + 2w
solve for either l or w
l = 100 - w
plug into the area equation to get one equation with two variables
A = w(100 - w)
A = -w^2 + 100w
take the derivative
A' = -2w + 100
set the derivative equal to zero
0 = -2w + 100
2w = 100
w = 50
This is the width that maximizes the area
with a width of 50, the length must also be 50 to have a perimeter of 200
therefore, they can rope up to 50 * 50 = 2500 ft^2
